The Humboldt County Sheriff’s Office is continuing its investigation into the arson of two stolen Pacific Gas and Electric Co. trucks over the weekend.

The sheriff’s office announced Tuesday that the fire caused an estimated loss of more than $150,000. According to a press release, the agency, along with the Humboldt County Arson Task Force, is still processing evidence.

The Samoa Peninsula Fire Department responded to a report of smoke visible at the north end of the Fairhaven Business Park, off Vance Avenue, on Sunday at 7 a.m.

Firefighters found a PG&E bucket truck engulfed in fire and located another company pickup truck parked nearby. The pickup’s passenger compartment had significant smoke damage and a melted interior, the release said.

PG&E employees determined the trucks had been stolen from the PG&E Myrtle Avenue facility sometime between Friday and Sunday. The sheriff’s office is requesting anyone with information to call Deputy Jim Mowrey at 445-7251.